Isaac told his girlfriend to meet him for dinner at his parents' house. When she turned up she was greeted by Isaac's brother in the front garden, where he said he wanted to play her a song. He gave her a pair of headphones from which she heard Mars's hit song.

She was told to sit in the open boot of Isaac's brother's Honda CRV. She sat and listened to the song as the car slowly rolled out of the driveway and down the road.

At the same time, Amy was treated to a choreographed dance routine from her friends. The routine ended with Isaac emerging from the group to get down on one knee and propose to his accepting girlfriend.

The clip now has over nine million hits on video site YouTube.

The video was even seen by Mars himself, who congratulated the couple over Twitter: "Congrats to Isaac Lamb and the future Mrs. I don't think I could've made a better music video for this song. Thank you."